Reinforced concrete structure.



'PATENTED NOV. 12, 1907. A. ROGERS. EINFORGED CONCRETE STRUCTURE;

AEPLIOATION FILED MAY 12, 1906.

.kicx

W/ T/VE SSE S STATES.

PATENT OFFICE, Y i

' ALSON ROGERS OF WARREN, PENNSYLV ANIA.

" REmFORCED conoms'rn STRUCTURE.

. crete Structures, of which the following is a specific-a tion; reference beinghad to the accompanying drawings.

My invention relates to structures having a framework made up of metallic members embedded in a matrix'of concrete or like imperishable material to give stiffness andstructural strength thereto; and the object of my invention is. to provide means for tying the me tallic frame-members together so that they will be held in properrelation to each other until the concrete has beenplaced about them'. r

' A further object of my invention is so to fashionsuch I means that they will add to the transverse stiffness of the structure and will become anchored in the concrete as the latter solidifies.

In the drawings illustrating the principle of my'i nvention and the bestmode now known to me of applying that principle, Figure 1 shows a girder embodyingmy invention; Fig. 2 illustrates the method of tying the metallic frame-members together in the case of a column. the limits of the surrounding-concrete being shown by the dotted lines; Fig. 3 is asectionaiview on the line A -A' of 1; Fig. 4 is a sectional view on the.

line BB of Fig. 1; Fig.5 is a sectional view of Fig.

2, the cutting plane being horizontal and passing 'j ust above the uppermost clamps Fig. (5 is an edge view oi a straiglit'clanip;,Fig. '1 is similar view of a diagonal clamp; F g. 8 is'a plan view of the clamps shown in Figs. (5 and 7; andFig. 9 shows a modified form of clamp used where the iramc-memlxers are oi (.iit'tilatQt'Qsssection. i

Referring to Fig. 1, which shows a girder embodying end so as to iit snugly around the iiiulilL -itfll'llmt'lng bar I; on lhree sides; and this end terminates in a iinger c which lies in prolongation of the side (I whentheanchorbar is placedupon the reinforcing banband before the concrete is placed. Before the concrete is placed around the reinforcing barsi. the linger c is bent inwar'lly and thereby it serves to anchor the bar a and to iilflsely'ei the ltainerineinber or..reiniprcing,bar b j-- npon thiee sides and both ends of the clamp-bars e, f

Specification of LettersPatent. Application filed m 12. 1906. Serial rt 316.600.

Patented Nov.12 1907;

terminate in a-finger c identical with the finger 0 upon one end of the anchor-bar a and-used in a like manner v for a like purpose The central clamp-bar e isstraight, while the clamp-bars) on each side of it have their central-portion inclined to the plane of their ands, so that they iormpractically diagonal braces. 5

In Fig. 2 the application of my newsystem of bracing to the frame-members or reinforcingbars b of a column nars e, diagonal cla np-bar s or braces f are placed which 1 connect frame-members upon the same side oi the column. Thus, the frame-members b are held'rigidly in place and great stiffness and structural strength is given to the column with the addition of very little weight distance on Jth sides of the joint. (See the lower part of Fig. 2).

' In the modified foim shown in Fig. 9, the recess 9! is shapcd'to re eive a reinforcing-bar'of circular crosssection; and in any'case, the recess will be oE-a forln Complementary to that of the cross-section of the bar which is to'iit into it. 7

What l claim is:

1. in a' reinforced structure, the combination with metallic frnmemiembers the ends of which abut and the 'filllng of cemcutitious material, of n clamp-bar formed at each end wl'clra recess complcirientary .to the cross-section my invention, the anchor-member u is formed at one and locks said members in position, said clamp-buiconsistinf; of u straight barformed at its ends with recesses in which said members snugly lit filling the same and with locking iii'ic'crs which extend from the outer wall of caclr recess inwardly towards caclr other to close the recesses 105 and lock the frame members therein; and a iiiiing 0i ccmcnliiious material in which said frame members and clampbnrs are embedded.

in testimony wlu-i-coi' i hereunto sol. my llaodthis day of May, moo. in tiieprcseiice of two witnesses at said 110 ALSON ROGERS.

.Witnesses A; A. luwa, A M. Returns.

or a pair of ironic members; a clamp-liarwhich engages 

